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OMAP4: Ethernet: KS8851 Board Support

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Enable Micrel KS8851 SPI network chip for OMAP4430

Signed-off-by: Abraham Arce <x0066660@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Abraham Arce 2010-05-14 12:05:26 -07:00 committed by Tony Lindgren
parent 8ebeb545a8
commit b2aa5e5757
1 changed files with 81 additions and 0 deletions
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81
arch/arm/mach-omap2/board-4430sdp.c
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@ -18,6 +18,7 @@
#include <linux/io.h>
#include <linux/gpio.h>
#include <linux/usb/otg.h>
#include <linux/spi/spi.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
@ -32,6 +33,75 @@
#include <asm/hardware/gic.h>
#include <asm/hardware/cache-l2x0.h>
#define ETH_KS8851_IRQ 34
#define ETH_KS8851_POWER_ON 48
#define ETH_KS8851_QUART 138
static struct spi_board_info sdp4430_spi_board_info[] __initdata = {
{
.modalias = "ks8851",
.bus_num = 1,
.chip_select = 0,
.max_speed_hz = 24000000,
.irq = ETH_KS8851_IRQ,
},
};
static int omap_ethernet_init(void)
{
int status;
/* Request of GPIO lines */
status = gpio_request(ETH_KS8851_POWER_ON, "eth_power");
if (status) {
pr_err("Cannot request GPIO %d\n", ETH_KS8851_POWER_ON);
return status;
}
status = gpio_request(ETH_KS8851_QUART, "quart");
if (status) {
pr_err("Cannot request GPIO %d\n", ETH_KS8851_QUART);
goto error1;
}
status = gpio_request(ETH_KS8851_IRQ, "eth_irq");
if (status) {
pr_err("Cannot request GPIO %d\n", ETH_KS8851_IRQ);
goto error2;
}
/* Configuration of requested GPIO lines */
status = gpio_direction_output(ETH_KS8851_POWER_ON, 1);
if (status) {
pr_err("Cannot set output GPIO %d\n", ETH_KS8851_IRQ);
goto error3;
}
status = gpio_direction_output(ETH_KS8851_QUART, 1);
if (status) {
pr_err("Cannot set output GPIO %d\n", ETH_KS8851_QUART);
goto error3;
}
status = gpio_direction_input(ETH_KS8851_IRQ);
if (status) {
pr_err("Cannot set input GPIO %d\n", ETH_KS8851_IRQ);
goto error3;
}
return 0;
error3:
gpio_free(ETH_KS8851_IRQ);
error2:
gpio_free(ETH_KS8851_QUART);
error1:
gpio_free(ETH_KS8851_POWER_ON);
return status;
}
static struct platform_device sdp4430_lcd_device = {
.name = "sdp4430_lcd",
.id = -1,
@ -113,6 +183,8 @@ static struct omap_musb_board_data musb_board_data = {
static void __init omap_4430sdp_init(void)
{
int status;
platform_add_devices(sdp4430_devices, ARRAY_SIZE(sdp4430_devices));
omap_serial_init();
/* OMAP4 SDP uses internal transceiver so register nop transceiver */
@ -120,6 +192,15 @@ static void __init omap_4430sdp_init(void)
/* FIXME: allow multi-omap to boot until musb is updated for omap4 */
if (!cpu_is_omap44xx())
usb_musb_init(&musb_board_data);
status = omap_ethernet_init();
if (status) {
pr_err("Ethernet initialization failed: %d\n", status);
} else {
sdp4430_spi_board_info[0].irq = gpio_to_irq(ETH_KS8851_IRQ);
spi_register_board_info(sdp4430_spi_board_info,
ARRAY_SIZE(sdp4430_spi_board_info));
}
}
static void __init omap_4430sdp_map_io(void)